APIs & Agentic AI
JSON Schema generator
Infer a draft 2020-12 schema from sample JSON, merging every array element so optional fields are not marked required.
Samples up to 1 MiB. TypeScript supports this generator’s inferred object, array, scalar, optional-key and union subset. Formats remain strings; it is not a runtime validator or a compiler for arbitrary JSON Schema.
Array items are merged across every element, not read from the first — so a field present in row 1 and absent in row 40 is correctly optional rather than required. One sample still only shows you one sample: treat the output as a first draft of a contract, not the contract. Runs entirely in your browser.
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